It used to drive me CrAzY that sometimes Popovich would not call time out in closing seconds of key games. Maybe he knew this all along:

Thanks to the people at NBA.com/stats, we now have some insight. According to their research, NBA teams are more likely to score in crunch time if they don't call timeout. It turns out that in no scenario were teams more likely to make a shot when they called timeout. This is true even though fast-break points were excluded entirely from the analysis -- to present an apples-to-apples comparison of half-court plays. The downside of this exclusion is that one of the big arguments against timeouts is that they slow play. In other words, if you included them, timeouts could look even worse.